Question

Arithmetic progression:

Find the common difference of AP if the first term is 5 and 5th term is 25

Answer 1

Heya....

Here's ur ans.---

an = a+ (n-1)d
a5 = 5 + (5-1) d

25 = 5+4d
d = 20/4
d = 5

Therefore the common difference is 5

Answer 2

Hi...☺

Here is your answer...✌

GIVEN THAT,

First term, a = 5

And,

Fifth term ,
T5 = 25

5+(5-1)d = 25

4d = 25-5

4d = 20

d = 5

HENCE,

Common difference of Given AP is 5